Fund Expense Ratio :

1.17%

Returns with sales charges reflect a maximum sales charge of 5.75%.

The performance quoted represents past performance, which is no indication of future results. Current performance may be higher or lower than the performance data quoted. Returns shown include the reinvestment of all distributions. Returns shown at net asset value do not reflect the current maximum sales charge, had the sales charge been included, returns would have been lower. The investment return and principal value of an investment will fluctuate so that shares, on any given day or when redeemed, may be worth more or less than the original cost. Therefore, there can be no assurance of future results.

Best returns

Worst returns

Best & Worst returns reflect a cumulative return for the three-month and one-year periods.

Year

Fund Returns

Russell 2500™ Index

2014

9.11%

7.07%

2013

36.10%

36.80%

2012

9.73%

17.88%

2011

-4.18%

-2.51%

2010

24.50%

26.71%

2009

33.82%

34.39%

2008

-27.77%

-36.79%

2007

10.91%

1.38%

2006

28.96%

16.16%

2005

0.00%

8.11%

Year

Q1

Q2

Q3

Q4

Yearly Returns

2015

-

-

-

-

3.78%

2014

4.47%

2.74%

-5.70%

7.81%

9.11%

2013

13.99%

2.01%

6.64%

9.75%

36.10%

2012

9.00%

-7.16%

4.64%

3.63%

9.73%

2011

6.44%

-0.42%

-21.04%

14.48%

-4.18%

2010

9.00%

-9.48%

10.55%

14.14%

24.50%

2009

-6.49%

15.12%

19.26%

4.24%

33.82%

2008

-8.60%

0.58%

-2.46%

-19.44%

-27.77%

2007

4.19%

9.35%

0.42%

-3.06%

10.91%

2006

15.71%

2.35%

2.13%

6.62%

28.96%

2005

-

-

-

-

0.00%

Performance is shown for each quarter and each calendar year. Past performance is no guarantee of future results.

Growth of $10,000
as of
01/31/2015

The chart begins on the Fund's inception date of 12/30/2005.

Based on a hypothetical Class A share investment of $10,000 on 12/30/2005 without sales charge and includes the reinvestment of all distributions.

NAV Historical Prices

Date

Net Asset Value

The chart begins on the Fund's inception date of 12/30/2005.

Based on a hypothetical Class A share investment of $10,000 on 12/30/2005 without sales charge and includes the reinvestment of all distributions.

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Minimum initial investment varies depending on the class of shares you buy and the type of account. IRAs, SIMPLEs, and SEP accounts with payroll deductions have no minimums. Please see Fund prospectuses for additional information.

IMPORTANT INFORMATION

A Note about Risk: The value of investments in equity securities will fluctuate in response to general economic conditions and to changes in the prospects of particular companies, including market, liquidity, currency, and political risks. Mid and small cap company stocks tend to be more volatile and may be less liquid than large cap company stocks. Mid and small cap companies typically experience higher risk of failure than large cap companies. Investments in value companies can continue to be undervalued for long periods of time and be more volatile than the stock market in general.These factors can adversely affect Fund performance.

Performance data quoted is historical. Past performance is not indicative of future results. Current performance may be higher or lower than the performance quoted. The investment return and principal value of an investment in the Fund will fluctuate so that shares, on any given day or when redeemed, may be worth more or less than their original cost. To obtain performance data current to the most recent quarter-end, go to quarter ending performance on our Website or call Lord Abbett at (888) 522-2388.

Class A Except as noted below, returns with sales charges reflect a maximum sales charge of 5.75% for equity funds, 2.25% for all tax-free income funds, fixed income funds and multi-asset class funds. There are also ongoing 12b-1 service fees (and, in certain cases, distribution fees).

Class A Shares purchased subject to a front-end sales charge have no contingent deferred sales charge (CDSC). However, certain purchases of Class A shares made without a front-end sales charge may be subject to a CDSC of 1% if the shares are redeemed before the first day of the month in which the one year anniversary of the purchase falls. The CDSC is not reflected in the performance with maximum sales charge.

With Sales Charge - Returns with sales charges reflect applicable fees and expenses and include all distributions reinvested.

Without Sales Charge - Returns shown are without sales charges and have all distributions reinvested. If a sales charge had been deducted, the results would have been lower.

Returns shown at less than a year reflect aggregate total returns.

Double-Digit Returns - instances of high double-digit returns were achieved primarily during favorable market conditions and may not be sustainable over time.

The Russell 2500™ Index is a market cap weighted index that includes the smallest 2,500 companies covered in the Russell 3000 universe of United States-based listed equities.

Indexes reflect total return, unless otherwise specified, with all dividends reinvested. Indexes are unmanaged, do not reflect the deduction of fees or expenses, and are not available for direct investment.

Lipper Category Average - Peer group averages are based on universes of funds with the same investment objectives. The average return for the peer group is based on the returns of each individual fund within the group for the period shown. This average assumes reinvestment of dividends.

Fund Expense Ratio Detail: Reflects expenses for the Fund's fiscal year-end and is subject to change. Fund expenses may fluctuate with market volatility. A substantial reduction in Fund assets (since its most recently completed fiscal year), whether caused by market conditions or significant redemptions or both, will likely cause total operating expenses (as a percentage of Fund assets) to become higher than those shown.

Lipper Category Average Expense Ratio reflects the average net expenses of Class A shares of all funds with in the peer group based on Lipper data available.